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Stepped Brake Piston Bleed Block
A four-step sacrificial bleed block / pad spacer for hydraulic disc brakes: slide it into the empty caliper and stop at the thickest step that fits (9, 11, 13 or 15 mm) to hold the pistons fully retracted while you bleed or swap pads. 99 x 26 x 15 mm with 45-degree lead-in ramps on the nose and every riser, 1-4 dimples marking each step's thickness, and two 5.5 mm M5 holes on 10 mm centres in the handle so it hangs on a hook or screws to the toolbox lid.
Flagged: hydraulic brake system. Not for safety-critical use without independent engineering review.
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